Old timer need an refresh :)

Discussion in 'Automotive Electrical' started by subpounder101, Sep 6, 2011.

  1. subpounder101

    subpounder101 Full Member

    Ok well I was given a Marine Batt. and I know the basics of the wiring for dual batt. use for car audio. But I would like to get a refresh on certain things to be 100%.

    I know it goes main batt - fuse(amp rating) - isolater relay - fuse(amp rating) - second batt. - fuse(amp rating) - Cap's - Amp and this is based off my setup. Now for the Isolater Relay, I have a 90amp Alternator, what type of Relay amps should I look for to keep a good charge 100 150 200 for a 13V Deep cycle batt?
  2. TheViking

    TheViking Well-Known Member

    big is good here...at least 200 amp. it has the contact surface area to handle higher currents and will be far more reliable....
  3. subpounder101

    subpounder101 Full Member

    200A really... thats not gonna cause back draw will it?? For some reason I see a 90A Alt. having trouble producing enough electrodes to charge the 12V - than the 13V Batt and run the car with the stereo bumping....
    Unless i have it back words and the 200A has a bleed off cycle to charge it self to the max than trickle charge down...?